diff options
Diffstat (limited to 'libc/sysdeps/linux/xtensa')
| -rw-r--r-- | libc/sysdeps/linux/xtensa/bits/mman.h | 84 |
1 files changed, 11 insertions, 73 deletions
diff --git a/libc/sysdeps/linux/xtensa/bits/mman.h b/libc/sysdeps/linux/xtensa/bits/mman.h index a42e92663..60be03bda 100644 --- a/libc/sysdeps/linux/xtensa/bits/mman.h +++ b/libc/sysdeps/linux/xtensa/bits/mman.h @@ -1,6 +1,5 @@ /* Definitions for POSIX memory map interface. Linux/Xtensa version. - Copyright (C) 1997, 2000, 2007 Free Software Foundation, Inc. - This file is part of the GNU C Library. + Copyright (C) 1997-2018 Free Software Foundation, Inc. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public @@ -20,86 +19,25 @@ # error "Never use <bits/mman.h> directly; include <sys/mman.h> instead." #endif -/* The following definitions basically come from the kernel headers. - But the kernel header is not namespace clean. */ - - -/* Protections are chosen from these bits, OR'd together. The - implementation does not necessarily support PROT_EXEC or PROT_WRITE - without PROT_READ. The only guarantees are that no writing will be - allowed without PROT_WRITE and no access will be allowed for PROT_NONE. */ - -#define PROT_READ 0x1 /* Page can be read. */ -#define PROT_WRITE 0x2 /* Page can be written. */ -#define PROT_EXEC 0x4 /* Page can be executed. */ -#define PROT_NONE 0x0 /* Page can not be accessed. */ -#define PROT_GROWSDOWN 0x01000000 /* Extend change to start of - growsdown vma (mprotect only). */ -#define PROT_GROWSUP 0x02000000 /* Extend change to start of - growsup vma (mprotect only). */ - -/* Sharing types (must choose one and only one of these). */ -#define MAP_SHARED 0x01 /* Share changes. */ -#define MAP_PRIVATE 0x02 /* Changes are private. */ -#ifdef __USE_MISC -# define MAP_TYPE 0x0f /* Mask for type of mapping. */ -#endif - -/* Other flags. */ -#define MAP_FIXED 0x10 /* Interpret addr exactly. */ -#ifdef __USE_MISC -# define MAP_FILE 0 -# define MAP_ANONYMOUS 0x800 /* Don't use a file. */ -# define MAP_ANON MAP_ANONYMOUS -# define MAP_RENAME MAP_ANONYMOUS -#endif - /* These are Linux-specific. */ #ifdef __USE_MISC +# define MAP_NORESERVE 0x0400 /* Don't check for reservations. */ # define MAP_GROWSDOWN 0x1000 /* Stack-like segment. */ -# define MAP_DENYWRITE 0x2000 /* ETXTBSY */ +# define MAP_DENYWRITE 0x2000 /* ETXTBSY */ # define MAP_EXECUTABLE 0x4000 /* Mark it as an executable. */ # define MAP_LOCKED 0x8000 /* Lock the mapping. */ -# define MAP_NORESERVE 0x0400 /* Don't check for reservations. */ # define MAP_POPULATE 0x10000 /* Populate (prefault) pagetables. */ # define MAP_NONBLOCK 0x20000 /* Do not block on IO. */ -# define MAP_UNINITIALIZED 0x4000000 /* For anonymous mmap, memory could - be uninitialized. */ +# define MAP_STACK 0x40000 /* Allocation is for a stack. */ +# define MAP_HUGETLB 0x80000 /* Create huge page mapping. */ +# define MAP_UNINITIALIZED 0x4000000 /* For anonymous mmap, memory could - be uninitialized. */ #endif -/* Flags to `msync'. */ -#define MS_ASYNC 1 /* Sync memory asynchronously. */ -#define MS_SYNC 4 /* Synchronous memory sync. */ -#define MS_INVALIDATE 2 /* Invalidate the caches. */ +#define __MAP_ANONYMOUS 0x0800 /* Don't use a file */ -/* Flags for `mlockall'. */ -#define MCL_CURRENT 1 /* Lock all currently mapped pages. */ -#define MCL_FUTURE 2 /* Lock all additions to address - space. */ - -/* Flags for `mremap'. */ -#ifdef __USE_GNU -# define MREMAP_MAYMOVE 1 -# define MREMAP_FIXED 2 -#endif +/* Include generic Linux declarations. */ +#include <bits/mman-linux.h> -/* Advice to `madvise'. */ -#ifdef __USE_BSD -# define MADV_NORMAL 0 /* No further special treatment. */ -# define MADV_RANDOM 1 /* Expect random page references. */ -# define MADV_SEQUENTIAL 2 /* Expect sequential page references. */ -# define MADV_WILLNEED 3 /* Will need these pages. */ -# define MADV_DONTNEED 4 /* Don't need these pages. */ -# define MADV_REMOVE 9 /* Remove these pages and resources. */ -# define MADV_DONTFORK 10 /* Do not inherit across fork. */ -# define MADV_DOFORK 11 /* Do inherit across fork. */ -#endif - -/* The POSIX people had to invent similar names for the same things. */ -#ifdef __USE_XOPEN2K -# define POSIX_MADV_NORMAL 0 /* No further special treatment. */ -# define POSIX_MADV_RANDOM 1 /* Expect random page references. */ -# define POSIX_MADV_SEQUENTIAL 2 /* Expect sequential page references. */ -# define POSIX_MADV_WILLNEED 3 /* Will need these pages. */ -# define POSIX_MADV_DONTNEED 4 /* Don't need these pages. */ +#ifdef __USE_MISC +# define MAP_RENAME MAP_ANONYMOUS #endif |